Minimum of 160mm long metal rod with a 8.6mm ish diameter (Temple Rhydding BD17)

I'm trying to make a lamp (not a pre made)and I've just noticed I'm missing something the bits I ordered and it's well past by months to raise a support ticket and I'm already massively over budget.

So if anyone has something even if it's part of something else that was going to recycle or Freecycle.

Thank you